Some fabrics are waterproof while others are not. Some waterproof fabrics are:Latex or natural rubberGore-TexVinylFluoropolymers
It depends which ones they are! Some can be waterproof and some aren't.
Some yes, some no. Depending on the brand you get, there can be some that are and some that aren't waterproof.
Waterproof Adhesive PP Film
No most drive cases are not waterproof. There are some available on computers.com that are waterproof.
A rock that is waterproof is non porous or non permeable.
Yes the Superdry Windcheaters are waterproof. Hence the name Superdry.
There are some waterproof robots, but normally they will sizzle then sink. You can a waterproof one in the Natural History museum in london.
Some outdoor swings have waterproof inserts that make existing cushions waterproof.